The solid rod with radius r = 34 mm is subjected to the loading F1 = 120 kN, F2 = 44 kN, F3 = 17 kN. With dimensions a = 290 mm and b = 360 mm, determine the magnitude of the combined shear stress at point B, given the following: Section Properties: A = 3631.68 mm², I = 1049556 mm⁴, J = 2099112 mm⁴, Qmax = 26203 mm³. F3 = 39.835 MPa, F6 = 6.441 MPa, F23 = 23.497 MPa, F0 = 0.001 MPa, F8 = 8.628 MPa, F21 = 21.111 MPa, F11 = 11.748 MPa.